There are a lot of ways to contrast the Democratic debate Tuesday night with the Republican debates, but one thing would likely get agreement across the spectrum – from voters in red states and blue states, liberals and conservatives: Democrats avoided personal attacks and insults and debated the issues; Republicans have spent much more time during their debates attacking one another, with the vitriol and bile of Donald Trump leading the race to the bottom.

In Las Vegas, we saw Democrats debating what to do about creating jobs, reducing income disparity, dealing with global warming, trade agreements that don’t protect U.S. workers sufficiently, immigration reform that offers a pathway to citizenship for undocumented workers, student debt and affordable higher education and, perhaps most vigorously of all due to its immediate relevance in light of more gun violence, gun control and the need to stand up to the NRA, which continues to oppose even Brady Bill-type background checks.

There are differences of opinion among Democrats on many of these issues, but the differences are relatively minor compared to what we know are the positions of Republicans on many of these issues – that is, to the extent we know given the frequency of personal attacks vs. serious discussions of solutions to America’s most pressing problems.

In short, while I believe, along with (apparently) most of the media, that Hillary Clinton did the best during the evening (I am a biased pro-Clinton enthusiast and a longtime friend), I actually believe who “won” the debate is far less important at this early stage than the fact that the real winner was the Democratic Party – in contrast to the Republican Party, whose brand has been further soiled by vitriol and personal-attack politics that have alienated so many Americans of all political stripes.

Having given my opinion on how great Secretary Clinton did, I must also tip my hat to Sen. Bernie Sanders.

I have written often how much I admire him and his ability to articulate populist messages to the progressive Democratic base.

I have written before that I wouldn’t be surprised if he did well or won Iowa or New Hampshire or both in 2016. (I believe it is true that no elected official from a state neighboring New Hampshire, in either party, has ever lost the New Hampshire presidential primary, other than the late Sen. Edward Kennedy in the 1980 primary vs. Jimmy Carter.)

But Tuesday night in Las Vegas, Senator Sanders exemplified what all the Democrats in the debate conveyed: He refused to attack Hillary Clinton personally and refused to make an issue of the email controversy. He received a standing ovation from the crowd, and he deserved it.

Sen. Sanders said that most Americans care more about hearing discussions about solutions to their most important problems. Of course he is right, according to all the polls.

So good for Sen. Sanders – the handshake with Hillary Clinton was the high point of the evening.

Why? Because most Americans want civil disagreement – a debate about the issues – not personal attacks.

Republicans ought to learn this lesson. The problem is, with Trump on the stage, it appears that most (though not all) can’t resist sinking down to his level.

We shall see whether Republicans isolate Trump for the personal-attack politics he practices and do what Gov. Chris Christie asked them to do in the last debate: debate the issues.

Lanny Davis, a Washington attorney specializing in legal crisis management, is a weekly columnist in The Hill newspaper and author of “Crisis Tales: Five Rules for Coping With Crises in Business, Politics and Life.” He served as special counsel to President Clinton from 1996-98 and is a longtime friend and supporter of former Secretary of State Hillary Clinton.